Lujiang Xue | a12477f | 2018-04-10 08:20:29 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2018 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package com.android.car.settings.common; |
| 17 | |
| 18 | import android.app.Activity; |
| 19 | import android.car.Car; |
| 20 | import android.car.CarNotConnectedException; |
| 21 | import android.car.drivingstate.CarUxRestrictions; |
| 22 | import android.car.drivingstate.CarUxRestrictionsManager; |
| 23 | import android.content.ComponentName; |
| 24 | import android.content.Context; |
| 25 | import android.content.ServiceConnection; |
| 26 | import android.os.IBinder; |
| 27 | import android.util.Log; |
| 28 | |
| 29 | import androidx.annotation.Nullable; |
| 30 | |
| 31 | /** |
| 32 | * Class that helps registering {@link CarUxRestrictionsManager.onUxRestrictionsChangedListener} and |
| 33 | * managing car connection. |
| 34 | */ |
| 35 | public class CarUxRestrictionsHelper { |
| 36 | private static final String TAG = "CarUxRestrictionsHelper"; |
| 37 | |
| 38 | // mCar is created in the constructor, but can be null if connection to the car is not |
| 39 | // successful. |
| 40 | @Nullable private final Car mCar; |
| 41 | @Nullable private CarUxRestrictionsManager mCarUxRestrictionsManager; |
| 42 | |
| 43 | private final CarUxRestrictionsManager.onUxRestrictionsChangedListener mListener; |
| 44 | |
| 45 | public CarUxRestrictionsHelper(Context context, |
| 46 | CarUxRestrictionsManager.onUxRestrictionsChangedListener listener) { |
| 47 | if (listener == null) { |
| 48 | throw new IllegalArgumentException("Listener cannot be null."); |
| 49 | } |
| 50 | mListener = listener; |
| 51 | mCar = Car.createCar(context, mServiceConnection); |
| 52 | }; |
| 53 | |
| 54 | /** |
| 55 | * Starts monitoring any changes in {@link CarUxRestrictions}. |
| 56 | * |
| 57 | * <p>This method can be called from {@code Activity}'s {@link Activity#onStart()}, or at the |
| 58 | * time of construction. |
| 59 | * |
| 60 | * <p>This method must be accompanied with a matching {@link #stop()} to avoid leak. |
| 61 | */ |
| 62 | public void start() { |
| 63 | try { |
| 64 | if (mCar != null && !mCar.isConnected()) { |
| 65 | mCar.connect(); |
| 66 | } |
| 67 | } catch (IllegalStateException e) { |
| 68 | // Do nothing. |
| 69 | Log.w(TAG, "start(); cannot connect to Car"); |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | /** |
| 74 | * Stops monitoring any changes in {@link CarUxRestrictions}. |
| 75 | * |
| 76 | * <p>This method should be called from {@code Activity}'s {@link Activity#onStop()}, or at the |
| 77 | * time of this adapter being discarded. |
| 78 | */ |
| 79 | public void stop() { |
| 80 | try { |
| 81 | if (mCar != null && mCar.isConnected()) { |
| 82 | mCar.disconnect(); |
| 83 | } |
| 84 | } catch (IllegalStateException e) { |
| 85 | // Do nothing. |
| 86 | Log.w(TAG, "stop(); cannot disconnect from Car"); |
| 87 | } |
| 88 | } |
| 89 | |
Lujiang Xue | eaff6c3 | 2018-04-10 08:20:29 -0700 | [diff] [blame^] | 90 | /** |
| 91 | * Checks if UX_RESTRICTIONS_NO_SETUP is set or not. |
| 92 | */ |
| 93 | public static boolean isNoSetup(CarUxRestrictions carUxRestrictions) { |
| 94 | return (carUxRestrictions.getActiveRestrictions() |
| 95 | & CarUxRestrictions.UX_RESTRICTIONS_NO_SETUP) |
| 96 | == CarUxRestrictions.UX_RESTRICTIONS_NO_SETUP; |
| 97 | } |
| 98 | |
Lujiang Xue | a12477f | 2018-04-10 08:20:29 -0700 | [diff] [blame] | 99 | private final ServiceConnection mServiceConnection = new ServiceConnection() { |
| 100 | @Override |
| 101 | public void onServiceConnected(ComponentName name, IBinder service) { |
| 102 | try { |
| 103 | mCarUxRestrictionsManager = (CarUxRestrictionsManager) |
| 104 | mCar.getCarManager(Car.CAR_UX_RESTRICTION_SERVICE); |
| 105 | mCarUxRestrictionsManager.registerListener(mListener); |
| 106 | |
| 107 | mListener.onUxRestrictionsChanged( |
| 108 | mCarUxRestrictionsManager.getCurrentCarUxRestrictions()); |
| 109 | } catch (CarNotConnectedException e) { |
| 110 | e.printStackTrace(); |
| 111 | } |
| 112 | } |
| 113 | |
| 114 | @Override |
| 115 | public void onServiceDisconnected(ComponentName name) { |
| 116 | try { |
| 117 | mCarUxRestrictionsManager.unregisterListener(); |
| 118 | mCarUxRestrictionsManager = null; |
| 119 | } catch (CarNotConnectedException e) { |
| 120 | e.printStackTrace(); |
| 121 | } |
| 122 | } |
| 123 | }; |
| 124 | } |